X-Git-Url: http://git.mutantstargoat.com?a=blobdiff_plain;f=src%2Fopengl%2Fopengl.cc;h=00b42f5b40c88bdd7bf1b243bd00a6a0aed6b388;hb=32feb79dc3b9ddeeab84a0329d53b8aaff86bb80;hp=a7ca8c1df118e134bf8426df260a58f329ee703e;hpb=0da7a98f74d00bfa6cf0d47fd7cf0f687eeba5f6;p=demo

diff --git a/src/opengl/opengl.cc b/src/opengl/opengl.cc
index a7ca8c1..00b42f5 100644
--- a/src/opengl/opengl.cc
+++ b/src/opengl/opengl.cc
@@ -1,12 +1,24 @@
 #include <GL/glew.h>
+#include <GLFW/glfw3.h>
 #include <stdio.h>
 
+#include "gfxapi.h"
 #include "opengl/opengl.h"
 
 extern GLFWwindow *win;
 extern int win_h;
 extern int win_w;
 
+static void clear(float r, float g, float b);
+static void viewport(int x, int y, int width, int height);
+static void zbuffer(bool enable);
+static void cull_face(Gfx_cull_face cf);
+static void reshape(int width, int height) {}
+static void wireframe(bool enable);
+static void swapbuffers();
+static void begin_drawing();
+static void end_drawing();
+
 bool init_opengl()
 {
 	if(!glfwInit()) {
@@ -16,6 +28,7 @@ bool init_opengl()
 
 	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
 	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 5);
+	glfwWindowHint(GLFW_SRGB_CAPABLE, GLFW_TRUE);
 
 	if(!(win = glfwCreateWindow(win_w, win_h, "glcow", 0, 0))) {
 		fprintf(stderr, "Failed to create window.\n");
@@ -24,6 +37,22 @@ bool init_opengl()
 	glfwMakeContextCurrent(win);
 
 	glewInit();
+
+	glEnable(GL_DEPTH_TEST);
+	glEnable(GL_CULL_FACE);
+	glEnable(GL_FRAMEBUFFER_SRGB); // linear colorspace
+
+	gfx_clear = clear;
+	gfx_viewport = viewport;
+	gfx_zbuffer = zbuffer;
+	gfx_cull_face = cull_face;
+	gfx_reshape = reshape;
+	gfx_wireframe = wireframe;
+	gfx_swapbuffers = swapbuffers;
+	gfx_begin_drawing = begin_drawing;
+	gfx_end_drawing = end_drawing;
+
+	// glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 	return true;
 }
 
@@ -35,9 +64,59 @@ void cleanup_opengl()
 	glfwTerminate();
 }
 
-void display_opengl()
+static void clear(float r, float g, float b)
 {
+	glClearColor(r, g, b, 1.0);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-	glClearColor(0.5, 0.5, 0.5, 1.0);
+}
+
+static void viewport(int x, int y, int width, int height)
+{
+	glViewport(x, y, width, height);
+}
+
+static void zbuffer(bool enable)
+{
+	if(enable)
+		glEnable(GL_DEPTH_TEST);
+	else
+		glDisable(GL_DEPTH_TEST);
+}
+
+static void cull_face(Gfx_cull_face cf)
+{
+	switch(cf) {
+	case GFX_CULL_NONE:
+		glDisable(GL_CULL_FACE);
+		break;
+	case GFX_CULL_FRONT:
+		glEnable(GL_CULL_FACE);
+		glCullFace(GL_FRONT);
+		break;
+	case GFX_CULL_BACK:
+		glEnable(GL_CULL_FACE);
+		glCullFace(GL_BACK);
+		break;
+	}
+}
 
-}
\ No newline at end of file
+static void wireframe(bool enabled)
+{
+	if(enabled)
+		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+	else
+		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+}
+
+static void swapbuffers()
+{
+	glfwSwapBuffers(win);
+}
+
+static void begin_drawing()
+{
+}
+
+static void end_drawing()
+{
+}